Pls solve find the area shaded part all 3

below explained briefly

Step-by-step explanation:

(a) to find the area of parallelogram use the formula: b * h = 30 * 20 = 600m^2

(b) to find the area of shaded of this one: first we need to find the area of rectangle and then area of two triangle and subtract them with rectangle.

area of rectangle : length * width = 25 * 7  = 175 cm^2

area of two triangles = 2(1/2*b*h) = 2 ( 1/2 * 7 * 5 ) = 35 cm^2

area of shaded = 175 - 35 = 140 cm^2

(c) there different methods of finding area of this figure.

one of the famous methods are that we know it a equilateral triangle thus all sides are 60 degree

formula : 1/2 * a * b * sin(C)

using this formula : 1/2 * 8 * 8 * sin( 60 )

                              : 27.7 cm^2

a) 0

step-by-step explanation:

i^413 x i^0 = 0 as any number multiplied by a zero is

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center (1,3) with radius 6

step-by-step explanation:

we must complete the square to find the center and radius of the circle.

first make sure the x and y squared terms have 1 as their coefficients. we also make sure x and y terms together.

we now create space between the x and y terms with parenthesis.

we complete the square by taking the middle terms -2x and the -6y - divide each and square them.

we add the squares to both sides.

simplify.

and write the quadratics in factored form.

the center is (h,k) or (1,3). the radius is the square root of 36 which is 6.